Test or priming cock.



B. MORGAN. TEST 0B. PRIMING 000K. 1

APPLICATION FILED JAN. 16, 1913.

Patented Feb. 3, 1914,

IfJl/ENTOR Bf/F/MRD MORGQ BY r WITNESSES I ATTORI VEY8 BERNARD MORGAN, OF NEWPORT, RHODE -ISLAND.

TEST OR PRIMING- COCK.

Application filed January 15, 1913. Serial No. 742,430.

Specification of Letters Patent.

Patented Feb. 3,1914.

To all whom it may concern Be itiknown that I, BERNARD MORGAN, a

subject of the King of Great Britain, and a resident-of Newport, in the county of Newport and State of Rhode Island, have invented certain new and useful Improvements in Test orPriming Cocks, of which the following isa full, clear, and exact description.

This invention relates to test or priming cocks for use with the cylinders of internal combustion engines or for other like purposes, and has reference more particularly to a device of this class which comprises a cylinder plug, and a closing plug movably associated wit-h thecylinder plug, the cylinderplug affording means for the introduction of an explosive fiuid into the cylinder upon which the device is mounted, and having a valve-seat, the closing plug having a selfcentering valverseat-engaging part adapted to close the cylinder plug.

The invention also relates to a test orpriming cock having two relatively movable plugs, one of which is provided with a manipulating part fashioned from material which will not readily transmit heat.

The invention further relates to a device of the class in question in which the cylinder plug has a valve-seat, and the closing valve chamber of an explosive engine, for testing has ,a movable valve-seat-engaging part which can be operated to grind the valve seat to insure a proper, tight fit of the parts.

- The object of the invention is to provide a, simple and inexpensive test or priming cock, by means of which a suitable quantity .of gasolene or explosive fluid can be con-- veniently introduced into the combustion or priming purposes which can be tightly closed to seal the combustion chamber, which can be readily manipulated without danger f of burning the fingers, due to the transmission of heat from the cylinderfto the device itself, in which the valve-seateengaging member is automatically self-centering, whereby a tight joint is insured, and which affords means for conveniently grinding in the valve-seat by means of the valve-seat.- engaging member, without taking apart or even removing it from t e cytigder.

the device for the purpose.-

described hereinafter and particularly set forth in the claims.

I Reference is to be had to theaccompanying drawings forming a part of this specification, in which simllar' characters of ref-- erence'indicate corresponding parts in all y the views, and in whic Figure 1 is a vertical section of the upper part of the'cylinder of an internal combustion engine having an embodiment of my invention applied thereto; Fig. 2 is an enlarged plan view of the device; Fig. 3 is a. longitudinal section of the preferred embodiment of the test or priming cock; Fig. 4 is a transverse section on the line 44 of Fig. l; and Fig. 5 is a perspective view of the closing plug of the device. I

Before proceeding to a more detailed explanation of my the device constitutes an improvement upon that shown in my United States Patent N 0.

982,009, dated January 17, 1911. 'In the present improved construction I r0vide,"as Wlll appear more clearly hereina' ter, aselfcentering relation of the valve-seat and the invention it should ,be clearly understood that the present form of valve-seat-engaging part; the latter, furthermore, a-ifords means for grinding in the valve.

.Certain of the details of construction shown for example herewith, form no part of the invention and can be varied in accordance w th individual preference and special conditions, without departing from permit the device to be easily manipulated. by means of a wrench or similar tool in screwing it into-place in the threaded cylchamber 13 of an engine. The lower part 1 4-- of the cylinder ppg is suitably threaded e upper poktion 15 of the cylinder. plug internally threaded inder head opening 12of thecombustion w to receive the correspondingly externally threaded closing plug 16. The recess or opening 17 in the upper part of the cylinder plug terminates at its lower end in a tapered valve-seat 18 having a valve opening 19 which connn'unicates with a passage or bore :20 having an enlargement 21 and extending through the central and lower portions of the cylinder plug.

The closing plug has a preferably tapered passage or opening 22 in the upper part thereof which constitutes a reservoir and a fluid conduit. At its lower end the closing plug has a substantially cylindrical neck 23 which communicates internally with the passage 22 and is of spherical curvature at the inside, to receive the correspondingly rounded head 24 of a valve head or valve-seat-engaging member 25, the latter having the lower end 26 suitably formed to fit snugly against the valveseat. The valve-seat-en ii of member has a limited freedom of movement in all directions and can thus adjust and center itself with respect to the valveseat when the closing plug is being screwed against the valve-seat.

The upper, rounded part ofthe valve scat-engaging member is provided with a transverse groove or kerf 27 adapted to receive the end of a screw-driver or similar tool introduced through the passage 22, so that the valveseat-engaging member can be rotated to grind the valve-seat in the usual manner without removing any part of the device. Ct he part 23 of the closing plug has a lateral opening 28 which communicates with the passage 22 and permits fluid to escape from the passage 22 into the recess 17 of the cylinder plug. Subsequently, it the closing plug is manipulated to displace the valve-seat-engaging member from. the

valve-seat, the explosive fluid can flowthrough the passage 20 and the enlarge ment 21 thereof, into the combustion chamber of the engine. The operation of the device in the present case is the same as that of the priming cock shown in my patent referred to above.

To facilitate the manipulation of the closing plug I provide a knob or handle 29 in the form of a disk having a roughened or serrated edge 30. The disk is provided with a central, threaded opening 31 by means of which it is mounted on the threaded closing plug. At the upper edge a laterally disposed flange 32 is provided which is pressed against the disk 29 and assists in securing the same in position. The disk is fashioned from indurated fiber, hard rubber or any other similar material adapted for the purpose, which will no; readily transmit heat from the metal cylinder and closing plugs to the hand of the operator of the device. It will be readily appreciated that after an internal combustion engine has been operated for any length of time the combustlon chamber becomes heated to a high degree, and this heat is of course readily transmitted to the metallic priming cock itself. It is therefore of great advantage to have the manipulating grip or handle of the priming cock of such material that the heat will not in turn be transmitted to the hand of the user to cause injury thereto. The valve-seat-engaging member and the threaded body are joined together by means of a ball and socket joint and thereby form an articulated plug,

Having thus described my invention, 1 claim as new, and desire to secure by Letters Patent 1. A device of the class described comprising a plug having a bore therethrough, and a valve-seat in said bore concentric with same and intermediate the ends of said plug, and an articulated closing plug comprising a body member associated with said'bore of said closing plug and having a here therethrough, and a seat-engaging memberadapted to engage said seat in said plug, said body member having a socket spherical in shape, and said valve-seat-engaging memher having a spherical portion engaging said socket, said spherical portion having means whereby said valve-seat-engaging member can be turned in said socket without removing any part of the device and thereby grind said valve seat.

2. A device of the class described comprising a, plug having a bore there'through, a valve-seat in said bore concentric with same and intermediate the ends of said plug, and an. articulated closing plug comprising a body member engaging said bore of said plug and concentric with same, and a valveseat-engaging member axial with said body member adapted to engage said seat in said plug, said body member and said valve-seat engaging member having a ball and socket connection, said body member having a central bore therethrough closed by said valve seat-engaging member, and a side opening in said body member connecting said bore within said body member with the bore in said plug above said valve-seat, said valve seat engaging member having a slot in its ball portion facing the central bore and in said body member and adapted to be engaged by a screw-driver to said central bore, whereby said valve seat can be ground without removing any part of the device 3. A device of the class described comprising a plughaving a bore and a valve seat; an articulated closing plug comprising two members one having a bore I'herethroug h and movably associated with the other of said members, the latter forming a valve head and being permanently associated with the first mentioned member, said valve head .name to this specification in the presence of having means1 whereby can be operated to two subscribing Witnesses. grin said va veseat w en all the arts are in the normal relative position, a zcess ber B D MORGAN 5 ing had to said valve head through said bore Witnesses:

of said first member. A. E. SNYDER,

In testimony whereof I have. signed my REMINGTON WARD. 

